Sion Weather in December
December in Sion sees daytime temperatures around -3°C (27°F) and lows of -12°C (10°F) at night. With around 139 mm (5.5 in) of snowfall expected, it's worth packing a rain jacket.
Rainfall in Sion in December
Expect around 14 days of snow based on historical data, with 139 mm (5.5 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Sion in December
In December, Sion gets very low temperatures, with highs of -3°C (27°F). Nights cool to around -12°C (10°F). December is part of winter. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. At -12°C (10°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. This month is extremely cold, so be sure to dress in layers to keep warm. Proper preparation can help you stay comfortable.
Sunshine in Sion in December
The area experiences limited sunny days, amounting to roughly 70 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.
Wind Speed in Sion in December
December has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.December in Sion can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Sion's climate page.
Sion Temperature in December
Min Temperature
-12°C (10°F)
Max Temperature
-3°C (27°F)
Chance of Rain
48%
Precipitation
139 mm (5.5 in)
Rainy days
14 days
Humidity
83%
Windspeed
1 m/s (2 knots)
Sunshine
70 hours
Percentage Sunshine
50%
Best Places in Switzerland in December
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Sion in December
It's wise to bundle up for freezing conditions in Sion in December. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Sion in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Sion's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Sion climate overview or explore weather in Switzerland.
